4,567 research outputs found
A Survey on Service Composition Middleware in Pervasive Environments
The development of pervasive computing has put the light on a challenging problem: how to dynamically compose services in heterogeneous and highly changing environments? We propose a survey that defines the service composition as a sequence of four steps: the translation, the generation, the evaluation, and finally the execution. With this powerful and simple model we describe the major service composition middleware. Then, a classification of these service composition middleware according to pervasive requirements - interoperability, discoverability, adaptability, context awareness, QoS management, security, spontaneous management, and autonomous management - is given. The classification highlights what has been done and what remains to do to develop the service composition in pervasive environments
Database independent Migration of Objects into an Object-Relational Database
This paper reports on the CERN-based WISDOM project which is studying the
serialisation and deserialisation of data to/from an object database
(objectivity) and ORACLE 9i.Comment: 26 pages, 18 figures; CMS CERN Conference Report cr02_01
Towards a novel framework for the assessment of enterprise application integration packages
In addressing enterprise integration problems, a diversity
of technologies such as CORBA and XML were
promoted, yet no single integration technology solves all
integration problems. As a result, a new generation of
software called Enterprise Application Integration (EAI)
is emerging to addresses many integration problems by
combining a diversity of integration technologies (e.g.
message brokers, adapters, XML). Since EAI is a new
research area, there is an absence of literature discussing
issues like its adoption, evaluation and implementation.
This paper, examines the application of two frameworks
for the evaluation of EAI packages in the practical arena.
In doing so, the authors use case study strategy to
investigate integration issues. Empirical data derived
from the case study suggest additions to the two
evaluation frameworks. Therefore, the authors revised
and extend previous works by proposing a novel
evaluation framework for the assessment of EAI
packages. The proposed framework makes novel
contribution at two levels. First, at the conceptual level,
as it incorporates criteria identified separately in previous
studies as evaluation criteria. The proposed framework
can be used as a decision-making tool and, supports
management when taking decisions regarding the
adoption of EAI. Additionally, it can be used by
researchers to analyse and understand the capabilities o
From service-oriented architecture to service-oriented enterprise
Service-Oriented Architecture (SOA) was originally motivated by enterprise demands for better business-technology alignment and higher flexibility and reuse. SOA evolved from an initial set of ideas and principles to Web services (WS) standards now widely accepted by industry. The next phase of SOA development is concerned with a scalable, reliable and secure infrastructure based on these standards, and guidelines, methods and techniques for developing and maintaining service delivery in dynamic enterprise settings. In this paper we discuss the principles and main elements of SOA. We then present an overview of WS standards. And finally we come back to the original motivation for SOA, and how these can be realized
Software engineering and middleware: a roadmap (Invited talk)
The construction of a large class of distributed systems can be simplified by leveraging middleware, which is layered between network operating systems and application components. Middleware resolves heterogeneity and facilitates communication and coordination of distributed components. Existing middleware products enable software engineers to build systems that are distributed across a local-area network. State-of-the-art middleware research aims to push this boundary towards Internet-scale distribution, adaptive and reconfigurable middleware and middleware for dependable and wireless systems. The challenge for software engineering research is to devise notations, techniques, methods and tools for distributed system construction that systematically build and exploit the capabilities that middleware deliver
INTEGRATION VERSUS DEDICATION IN ROMANIAN MANAGEMENT SUPPORT SYSTEMS
The technologies supporting future business must be intuitive from a user standpoint, flexible from design standpoint and highly productive. As an answer to many requirements, analysts recommend the inclusion of SOA and ESB in the IT management strategies, since these tend to become mainstream, overcoming their abstract vision status in the last decade. In this paper, we provide a study regarding the attitude of companies from north-western Romania with respect to this transition and the SOA&ESB models. Our analysis targets attributes such as: level of understanding, knowledge and concern in adopting such technologies, the management involvement in the company IT strategy, the added value of the new technologies and risk factors for the migration towards an SOA&ESB architecture.integration,enterprise applications,web applications,SOA,ESB,framework
A framework for deriving semantic web services
Web service-based development represents an emerging approach for the development of distributed information systems. Web services have been mainly applied by software practitioners as a means to modularize system functionality that can be offered across a network (e.g., intranet and/or the Internet). Although web services have been
predominantly developed as a technical solution for integrating software systems, there is a more business-oriented aspect that developers and enterprises need to deal with in order to benefit from the full potential of web services in an electronic market. This āignoredā aspect is the representation of the semantics underlying the services themselves as well as the āthingsā that the services manage. Currently languages like the Web Services Description Language (WSDL) provide the syntactic means to describe web services, but
lack in providing a semantic underpinning. In order to harvest all the benefits of web services technology, a framework has been developed for deriving business semantics from syntactic descriptions of web services. The benefits of such a framework are two-fold. Firstly, the framework provides a way to gradually construct domain ontologies from previously defined technical services. Secondly, the framework enables the
migration of syntactically defined web services toward semantic web services. The study follows a design research approach which (1) identifies the problem area and its relevance from an industrial case study and previous research, (2) develops the
framework as a design artifact and (3) evaluates the application of the framework through a relevant scenario
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